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Eugen
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Merge pull request eugenp#213 from gauravrmazra/master
Common Configuration for Spring Boot Application
2 parents f1fc00a + 9c9351d commit de5fef0

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11 files changed

+316
-29
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‎spring-boot/pom.xml‎

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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-web</artifactId>
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<!-- <exclusions>
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<exclusion>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-tomcat</artifactId>
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</exclusion>
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</exclusions> -->
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</dependency>
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<!-- <dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-jetty</artifactId>
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</dependency> -->
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<!-- <dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-undertow</artifactId>
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</dependency> -->
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<dependency>
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<groupId>org.springframework.boot</groupId>

‎spring-boot/src/main/java/org/baeldung/common/error/MyCustomErrorController.java‎

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package org.baeldung.common.error;
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import org.springframework.boot.autoconfigure.web.ErrorController;
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import org.springframework.web.bind.annotation.RequestMapping;
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public class MyCustomErrorController implements ErrorController {
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private static final String PATH = "/error";
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public MyCustomErrorController() {
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// TODO Auto-generated constructor stub
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}
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@RequestMapping(value=PATH)
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public String error() {
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return "Error heaven";
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}
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@Override
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public String getErrorPath() {
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return PATH;
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}
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}

‎spring-boot/src/main/java/org/baeldung/common/error/SpringHelloServletRegistrationBean.java‎

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package org.baeldung.common.error;
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import javax.servlet.Servlet;
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import org.springframework.boot.context.embedded.ServletRegistrationBean;
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public class SpringHelloServletRegistrationBean extends ServletRegistrationBean {
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public SpringHelloServletRegistrationBean() {
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}
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public SpringHelloServletRegistrationBean(Servlet servlet, String... urlMappings) {
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super(servlet, urlMappings);
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}
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}

‎spring-boot/src/main/java/org/baeldung/common/error/controller/ErrorController.java‎

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package org.baeldung.common.error.controller;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RestController;
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@RestController
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public class ErrorController {
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public ErrorController() {
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}
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@RequestMapping("/400")
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String error400() {
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return "Error Code: 400 occured.";
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}
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@RequestMapping("/errorHeaven")
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String errorHeaven() {
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return "You have reached the heaven of errors!!!";
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}
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}

‎spring-boot/src/main/java/org/baeldung/common/properties/MyServletContainerCustomizationBean.java‎

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package org.baeldung.common.properties;
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import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;
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import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer;
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import org.springframework.boot.context.embedded.ErrorPage;
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import org.springframework.http.HttpStatus;
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import org.springframework.stereotype.Component;
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@Component
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public class MyServletContainerCustomizationBean implements EmbeddedServletContainerCustomizer {
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public MyServletContainerCustomizationBean() {
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}
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@Override
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public void customize(ConfigurableEmbeddedServletContainer container) {
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container.setPort(8084);
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container.setContextPath("/springbootapp");
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container.addErrorPages(new ErrorPage(HttpStatus.BAD_REQUEST, "/400"));
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container.addErrorPages(new ErrorPage("/errorHeaven"));
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}
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}

‎spring-boot/src/main/java/org/baeldung/common/resources/ExecutorServiceExitCodeGenerator.java‎

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package org.baeldung.common.resources;
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import java.util.Objects;
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import java.util.concurrent.ExecutorService;
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import org.springframework.boot.ExitCodeGenerator;
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public class ExecutorServiceExitCodeGenerator implements ExitCodeGenerator {
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private ExecutorService executorService;
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public ExecutorServiceExitCodeGenerator(ExecutorService executorService) {
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}
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@Override
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public int getExitCode() {
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int returnCode = 0;
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try {
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if (!Objects.isNull(executorService)) {
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executorService.shutdownNow();
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returnCode = 1;
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}
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}
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catch (SecurityException ex) {
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returnCode = 0;
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}
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return returnCode;
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}
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}

‎spring-boot/src/main/java/org/baeldung/controller/servlet/HelloWorldServlet.java‎

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package org.baeldung.controller.servlet;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.util.Objects;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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public class HelloWorldServlet extends HttpServlet {
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private static final long serialVersionUID = 1L;
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public HelloWorldServlet() {
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super();
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}
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protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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PrintWriter out = null;
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try {
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out = response.getWriter();
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out.println("HelloWorldServlet: GET METHOD");
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out.flush();
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}
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finally {
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if (!Objects.isNull(out))
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out.close();
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}
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}
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protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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PrintWriter out = null;
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try {
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out = response.getWriter();
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out.println("HelloWorldServlet: POST METHOD");
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out.flush();
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}
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finally {
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if (!Objects.isNull(out))
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out.close();
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}
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}
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}

‎spring-boot/src/main/java/org/baeldung/controller/servlet/SpringHelloWorldServlet.java‎

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package org.baeldung.controller.servlet;
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import java.io.IOException;
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import java.io.PrintWriter;
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import java.util.Objects;
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import javax.servlet.ServletException;
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import javax.servlet.http.HttpServlet;
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import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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public class SpringHelloWorldServlet extends HttpServlet {
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private static final long serialVersionUID = 1L;
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public SpringHelloWorldServlet() {
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super();
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}
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protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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PrintWriter out = null;
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try {
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out = response.getWriter();
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out.println("SpringHelloWorldServlet: GET METHOD");
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out.flush();
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}
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finally {
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if (!Objects.isNull(out))
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out.close();
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}
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}
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protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
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PrintWriter out = null;
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try {
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out = response.getWriter();
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out.println("SpringHelloWorldServlet: POST METHOD");
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out.flush();
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}
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finally {
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if (!Objects.isNull(out))
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out.close();
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}
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}
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}

‎spring-boot/src/main/java/org/baeldung/main/SpringBootActuatorApplication.java‎

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This file was deleted.

‎spring-boot/src/main/java/org/baeldung/main/SpringBootApplication.java‎

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package org.baeldung.main;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import org.baeldung.common.error.SpringHelloServletRegistrationBean;
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import org.baeldung.common.resources.ExecutorServiceExitCodeGenerator;
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import org.baeldung.controller.servlet.HelloWorldServlet;
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import org.baeldung.controller.servlet.SpringHelloWorldServlet;
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import org.baeldung.service.LoginService;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.ComponentScan;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RestController;
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@RestController
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@EnableAutoConfiguration
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@ComponentScan({ "org.baeldung.common.error", "org.baeldung.common.error.controller",
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"org.baeldung.common.properties", "org.baeldung.common.resources", "org.baeldung.endpoints",
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"org.baeldung.service", "org.baeldung.monitor.jmx", "org.baeldung.service"})
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public class SpringBootApplication {
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private static ApplicationContext applicationContext;
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@Autowired
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private LoginService service;
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@RequestMapping("/")
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String home() {
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service.login("admin", "admin".toCharArray());
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return "TADA!!! You are in Spring Boot Actuator test application.";
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}
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public static void main(String[] args) {
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applicationContext = SpringApplication.run(SpringBootApplication.class, args);
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}
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@Bean
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public ExecutorService executorService() {
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return Executors.newFixedThreadPool(10);
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}
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@Bean
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public HelloWorldServlet helloWorldServlet() {
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return new HelloWorldServlet();
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}
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@Bean
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public SpringHelloServletRegistrationBean servletRegistrationBean() {
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SpringHelloServletRegistrationBean bean = new SpringHelloServletRegistrationBean(new SpringHelloWorldServlet(), "/springHelloWorld/*");
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bean.setLoadOnStartup(1);
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bean.addInitParameter("message", "SpringHelloWorldServlet special message");
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return bean;
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}
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/* @Bean
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public JettyEmbeddedServletContainerFactory jettyEmbeddedServletContainerFactory() {
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JettyEmbeddedServletContainerFactory jettyContainer = new JettyEmbeddedServletContainerFactory();
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jettyContainer.setPort(9000);
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jettyContainer.setContextPath("/springbootapp");
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return jettyContainer;
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}
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@Bean
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public UndertowEmbeddedServletContainerFactory embeddedServletContainerFactory() {
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UndertowEmbeddedServletContainerFactory factory = new UndertowEmbeddedServletContainerFactory();
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factory.addBuilderCustomizers(new UndertowBuilderCustomizer() {
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@Override
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public void customize(io.undertow.Undertow.Builde builder) {
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builder.addHttpListener(8080, "0.0.0.0");
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}
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});
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return factory;
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}*/
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@Bean
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@Autowired
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public ExecutorServiceExitCodeGenerator executorServiceExitCodeGenerator(ExecutorService executorService) {
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return new ExecutorServiceExitCodeGenerator(executorService);
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}
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public void shutDown(ExecutorServiceExitCodeGenerator executorServiceExitCodeGenerator) {
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SpringApplication.exit(applicationContext, executorServiceExitCodeGenerator);
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}
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}

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